文字列変位語

public class Solution{

    public static void main(String[] args){
        String source = "abvc";
        String target = "abcv";
        if(sort(source).equals(sort(target)))
            return true;
        else
            return false;
    }

    public static String sort(String a)
    {
        StringBuilder sb = new StringBuilder();
        char[] arr = a.toCharArray();
        Arrays.sort(arr)
        for(int i=0;ireturn sb.toString();
    }

}